Multi Split or Single Split Air Conditioning – How do you decide?

THE PROS & CONS OF SINGLE VS MULTI SPLIT AIR CONDITIONING SYSTEMS

When considering the best solution for your air conditioning needs it always helps to do a little homework first.
So lets start by defining the difference between the two options.

Pictured above is an example of how not considering the key requirements can result in a messy and dangerous outcome.

Single-Split air conditioning system refers to a type of air conditioning setup where there is a single indoor unit (evaporator) connected to a single outdoor unit (condenser).

Multi-Split air conditioning system is a setup where multiple indoor units are connected to a single outdoor unit. Each indoor unit can be independently controlled, allowing for customized temperature settings in different rooms or areas of a building.

A few key factors you should be considering when starting the selection process.

1. Number of rooms or zones to be cooled/heated
2. Space availability for outdoor unit installation
3. Energy efficiency requirements
4. Budget constraints

It’s worth noting that multi-split systems typically have higher upfront costs due to the need for multiple indoor units and additional installation complexity. However, they can offer long-term cost savings if you require air conditioning in multiple areas. On the other hand, single-split systems are often more affordable and suitable for individual room cooling.

Here are some of the reasons you might consider investing in a Multi-split System as an air conditioning solution:

• Entire house air conditioning in the case where there is insufficient roof space for a ducted system.

• Townhouses and units where the body corporate allows e.g., only one unit on a balcony.

• Small outside areas where there is only room for one outdoor unit.

• High profile areas where multiple outdoors units are not aesthetically pleasing.

Bear in mind, if the multi outdoor unit fails then all the rooms serviced by that multi lose the air-conditioning. In the case of a single outdoor faulty unit then only one room loses the air conditioning.

So what are the pros and cons of each system?

SINGLE SPLIT UNIT – PROS

1. Individual temperature control: Each indoor unit can be independently controlled, allowing for customized temperature settings in different rooms.
2. Energy efficiency: You can selectively cool or heat specific areas, saving energy by not conditioning unused spaces.
3. Cost-effective for single-zone cooling: If you only need to cool or heat a single room or area, a single-split system is usually more affordable than a multi-split system.
4. Easy installation: The installation process is generally simpler since it involves connecting a single indoor unit to a corresponding outdoor unit.

SINGLE SPLIT UNIT – CONS

1. Limited number of zones: A single-split system can only cool or heat one room or area at a time, so it may not be suitable if you require air conditioning in multiple zones.
2. Multiple outdoor units: If you need to cool or heat multiple rooms, you’ll need to install separate outdoor units for each indoor unit, which can be visually unappealing and take up more space.

MULTI SPLIT UNIT – PROS

1. Multiple zone cooling: You can connect multiple indoor units to a single outdoor unit, allowing for simultaneous cooling or heating in different rooms or areas.
2. Space-saving: With a single outdoor unit, multi-split systems are a good option when space constraints prevent the installation of multiple outdoor units.
3. Cost-effective for multiple zones: If you require air conditioning in several rooms or areas, a multi-split system can be more cost-effective than installing separate single-split systems for each zone.

MULTI SPLIT UNIT – CONS

1. Higher upfront cost: Multi-split systems generally have higher upfront costs due to the need for multiple indoor units and additional installation complexity.
2. Complex installation: The installation process can be more involved, as it requires multiple indoor units to be connected to a single outdoor unit.
3. Limited distance between indoor units: There may be limitations on the distance between the outdoor unit and indoor units, which could affect the system’s flexibility and placement options.

In summary

As you can see being specific about your requirements at the start can help quickly identify which system will suit your needs. Multi Split Systems provide better aesthetics and a solution for restricted outdoor areas. Single Systems cost less and provide greater flexibility if one outdoor unit fails.

We recommend talking to our team at Melbourne Heating & Cooling to help you make the right choice.